How does a Mouse know when you move it? || How Does a Computer Mouse Work?

In this video, we explore the different parts of a computer mouse and we'll focus on the optical navigation system.  Specifically, we'll look at how exactly computer mice can track their movement on a mouse pad.  Finally, we take a look at the difference between gaming mice and normal mice, and we explore DPI or dots per inch and how different mice have different amounts of DPI.

Table of Contents:

00:00 - Inside of a Computer Mouse

00:43 - Image Sensor

03:16 - Cross-Correlation Algorithm

05:42 - Gaming Mice vs Normal Mice

06:50 - What exactly is DPI or Dots Per inch?

07:43 - How do we reach 25,000 DPI?

09:29 - Specs of different computer mice

10:39 - PCBWay Sponsored Segment

11:23 - Outro

How do Scroll Wheels Work? 🖱🛠🔬

Take a look at their PCB Assembly, for an inexpensive population of the components on your PCBs.

Have you ever scrolled a scroll wheel and wondered how it scrolls?  Scroll is a rather strange word, isn't it?  Anywho, in this video, we're going to explore the inside of a computer mouse and look at two different scroll wheels: an optical rotary encoder, and a magnetic rotational position sensor, and see how they are used to measure up and down rotational movement in a computer mouse scroll wheel.  We're also going to explore the push button under the scroll wheel as well as the free-spinning vs. ratchet mode of the scroll wheel.

Table of Contents:

00:00 - Intro

00:40 - Inside an Optical Scroll Wheel

02:46 - Direction of Rotation

03:37 - Inside a Magnetic Scroll Wheel

06:50 - Pushbuttons and Free Spinning Vs Ratchet Mode

09:08 - PCBWay

09:54 - Outro